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EP0045814B1 - Ressort spiral réglable pour appareil mesureur - Google Patents

Ressort spiral réglable pour appareil mesureur Download PDF

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Publication number
EP0045814B1
EP0045814B1 EP80104607A EP80104607A EP0045814B1 EP 0045814 B1 EP0045814 B1 EP 0045814B1 EP 80104607 A EP80104607 A EP 80104607A EP 80104607 A EP80104607 A EP 80104607A EP 0045814 B1 EP0045814 B1 EP 0045814B1
Authority
EP
European Patent Office
Prior art keywords
spring
band
measuring
coil
spiral
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP80104607A
Other languages
German (de)
English (en)
Other versions
EP0045814A1 (fr
Inventor
Nándor Böhm
János Böhm
Robert Böhm
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KOZUTI KOZLEKEDESI TUDOMANYOS KUTATO INTEZET
Original Assignee
KOZUTI KOZLEKEDESI TUDOMANYOS KUTATO INTEZET
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by KOZUTI KOZLEKEDESI TUDOMANYOS KUTATO INTEZET filed Critical KOZUTI KOZLEKEDESI TUDOMANYOS KUTATO INTEZET
Priority to EP80104607A priority Critical patent/EP0045814B1/fr
Priority to DE8080104607T priority patent/DE3065885D1/de
Priority to US06/175,707 priority patent/US4595184A/en
Publication of EP0045814A1 publication Critical patent/EP0045814A1/fr
Application granted granted Critical
Publication of EP0045814B1 publication Critical patent/EP0045814B1/fr
Expired legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/16—Elements for restraining, or preventing the movement of, parts, e.g. for zeroising
    • G01D11/18—Springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
    • F16F1/04—Wound springs
    • F16F1/10—Spiral springs with turns lying substantially in plane surfaces
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R17/00—Measuring arrangements involving comparison with a reference value, e.g. bridge
    • G01R17/02—Arrangements in which the value to be measured is automatically compared with a reference value
    • G01R17/06—Automatic balancing arrangements
    • G01R17/08—Automatic balancing arrangements in which a force or torque representing the measured value is balanced by a force or torque representing the reference value
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder

Definitions

  • the invention relates to an adjustable measuring coil spring for measuring instruments, such as power, resistance, speed and fuel consumption measuring instruments of motor vehicles and work machines, with a holding housing running along at least the outer spring turn and with an adjusting device interacting with the outer spring band end, with which the effective The length of the spring band is adjustable.
  • a measuring coil spring of this type is known from DE-A No. 1962278.
  • the effective range of the spring characteristic can also be set. This is achieved in that the fastening point at which the outer spring end is fixed is adjusted along the spiral windings, so that the effective length of the spring windings is thereby adjusted.
  • the measuring instruments mentioned mainly speed or speed measuring instruments, dynamometers and the like, continuously measure a continuously occurring process and indicate its changes; if necessary, the measurement results are also registered.
  • the processes to be measured are generally related to important regulations: e.g. with a tachometer, through which the permissible traffic of road vehicles is to be checked, monitored and guaranteed.
  • a tachometer through which the permissible traffic of road vehicles is to be checked, monitored and guaranteed.
  • work processes are controlled and also automated.
  • the observed processes are indicated with the aid of a moment acting on a shaft, which causes a correspondingly large counter-moment in a measuring spiral spring acting on the shaft.
  • the measurement results are shown on a linear scale, the measuring spiral spring of the measuring instrument having a spring characteristic that is linear with the measuring deflection or the measuring moment.
  • Measuring processes that are not linear can be converted into linear processes by various, complicated mechanisms: e.g. for measuring instruments, of which a flowing amount of liquid is registered.
  • There are moment sensors by means of which the measured values are displayed on an empirical scale (e.g. on a linear scale with certain kilometer speed measuring instruments). It often happens that the distribution of the measuring area becomes too narrow due to an exaggerated length of the entire area and therefore a sufficiently precise value cannot be displayed.
  • an adjustable measuring spiral spring is created, by means of which, in cooperation with other unchanged measuring instruments and devices, it is possible to display the measured values on an arbitrarily selected scale or scale distribution. So e.g. the measured values are to be displayed on a logarithmic scale using a pointer sensing a linear moment, or on a linear or logarithmic scale using a pointer sensing a quadratic torque.
  • this object is achieved in that the holding housing is provided with a holding spiral which engages between the windings of the measuring spiral spring and which can be rotated and against which the spring band rests with its band section adjoining its outer spring band end, and in that the spring band engages one of the outer spring windings to to the inner spring turns continuously increasing or decreasing band cross-section.
  • the increasing or decreasing band cross-section can be achieved with a constant band thickness through a recess formed in the spring band.
  • An advantage of the invention is that the visual representation of the results to be measured can be carried out with a pointer sensing different moments on a logarithmic scale.
  • the measured values obtained by measuring instruments are compared with one another or values composed of the measured values in a certain way are formed. So far, such composite values have been calculated, i.e. with the help of a calculating machine or a slide rule, each with arbitrarily selected measured values.
  • concentric calculating disks are arranged which interact independently of one another with a pointer, so that the desired value is displayed in each case, similarly to the slide of a calculating rod.
  • the current speed of a vehicle is displayed by a measuring instrument in kilometers / hour, and the respective fuel consumption by a consumption meter in liters / hour. If both instruments have concentrically operated logarithmic scales, the current specific consumption can be displayed in liters / 100 km.
  • This Value is representative of economical or uneconomical driving. However, up to now, this value could only be theoretically determined from the separately readable values only by calculating or with the help of a computing stick, but not while driving.
  • the torque measured on the brake test bench and the speed of a gasoline or diesel engine are used to determine the engine power. If both sensors are provided with a logarithmic scale, a measuring device can be obtained by which the power is displayed.
  • the voltage (V) and the current (A) are measured separately using simple measuring devices. If the measured values are displayed on a logarithmic scale as a composite value, one can obtain the instantaneous power (W) or the instantaneous resistance value (Q). At the same time, the sensed individual values are displayed by this device.
  • the invention can also be used in the fields of technology, meteorology, automation, and other fields.
  • department stores e.g. the displayed measured values from weight measurements with adjustable individual prices are put together by a turntable and thus the total price is displayed. This simplifies both purchasing and control.
  • measuring instruments as specified in examples a to d, can be realized with the help of the adjustable measuring spiral spring according to the invention.
  • a great advantage of the invention is that the measuring coil spring designed according to the invention has small dimensions and a small mass. Basically, it is a small component that is exchanged for the common measuring coil spring, while the measuring instruments, sensors, etc. previously used can be retained unchanged.
  • the spring characteristic i.e. the function of the spring work or elastic restoring work to counteract the respective measuring moment
  • the spring characteristic i.e. the function of the spring work or elastic restoring work to counteract the respective measuring moment
  • the spring characteristic can be shaped in advance by a corresponding choice of the cross-sectional change of the spring band and by setting the effective length of the measuring spiral spring a desired range of this spring characteristic can be selected and modified .
  • the inner spring end of the measuring coil spring 1 is firmly connected to a ring 2, the so-called spring core, which sits firmly on a pointer shaft of a measuring instrument, so that the restoring torque or counter-torque generated by the measuring coil spring 1 acts on the pointer shaft.
  • the measuring spiral spring 1 is accommodated in a holding housing which has a holding spiral 7 which projects as a spiral rib from a holding plate 8 and engages between the windings of the measuring spiral spring 1.
  • the course of the spring windings of the measuring spiral spring 1 is therefore adapted to the course thereof by the guidance of the holding spiral 7 and is therefore predetermined to a desired course.
  • FIG. 1 FIG.
  • the measuring coil spring 1 rests with its band section adjoining its outer spring end 9 on the outside of the outer winding section of the holding spiral 7.
  • the measuring coil spring 1 rests with its outer band section on the inside of the holding spiral 7, so that here the direction of rotation of the holding plate 8 and thus the holding spiral 7 for applying the outer turns of the measuring spiral spring 1 is reversed as for those from FIG. 3 apparent embodiment.
  • the windings of the measuring spiral spring 1 are more or less applied to the holding spiral 7, so that the effective length of the measuring spiral spring 1 and thereby the effective range of its spring characteristic can be adjusted in a controlled manner by changing the angle of rotation of the holding spiral 7.
  • the measuring spiral spring 1, which has a logarithmic characteristic curve, can also be realized by means of inclinations of the spring windings which vary over the spring length or variable cross-sectional dimensions of the interstices between the windings. This measure can be carried out easily if the holding spiral 7, on which the spring windings are guided, is designed accordingly in its course.
  • the material of the spring band of the measuring spiral spring 1 can be produced not only from the conventional metals, but also from plastic of appropriate elasticity, expediently from glass fiber reinforced plastic.
  • the measuring spiral spring 1 is designed such that it expediently has an unchanged thickness along the length of its spring band, but gradually increases or decreases in width has, so that their cross-section is variable accordingly.
  • the rectangular cross section of the spring band of the measuring spiral spring 1 is continuously reduced or progressively formed over the length of the band.
  • the decrease or increase in the strip cross section is preferably carried out while maintaining a constant strip thickness by changing the width of the strip, because this is easier to do than a change in the strip thickness, for which precise control of the rolling mill is required.
  • the reduction in the spring cross section or the change in the width of the spring band can be obtained by a cutout 1 a punched out of the spring band, as can be seen from FIG. 3.
  • the function of changing the width of the spring band or changing the cross section of the measuring spiral spring 1 can be selected by calculation depending on the respectively desired torque and angle of rotation in order to achieve a desired spring characteristic.
  • the change in cross section of the spring band forming the measuring coil spring 1 is preferably such that the measuring coil spring 1 receives a logarithmic characteristic.
  • FIGS. 1 and 2 represent a preferred solution because, while maintaining the essence of the invention, the measuring spiral spring 1 made of plastic and the holding plate 8 with the holding spiral 7 can be produced from a single piece by pressing.
  • the measuring spiral spring 1 is held in its spirally wound state in the holding spiral 7 and on the holding plate 8 and can be used with it as a structural unit in a spring housing, the outer spring end 9 being clamped in an opening in the spring housing.
  • the holding plate 8 with the holding spiral 7 are rotatably mounted in the spring housing and can, for example with an adjusting screw which is rotatably mounted in the spring housing and engages in a toothing on the outer edge of the holding plate 8, by rotating the holding plate 8 and therefore the holding spiral 7 for the adjustment of the Spring characteristic can be rotated.
  • the measuring spiral spring 1 can be handled with the holding plate 8 as a structural unit and forms with this an interchangeable unit that can be inserted into the spring housing.
  • the number and the length of the holding spiral 7 guiding the spring band on the holding plate 8 are chosen in accordance with the length of the measuring spiral spring or the number of turns thereof.
  • a material can be selected in which the change in the band cross-section is not necessary because the logarithmic design of the spring characteristic can also be achieved by a correspondingly variable slope of the spring windings, which can be achieved by a corresponding course of the holding spiral leading the spring band 7 is determined.
  • the material of the measuring spiral spring 1 is a metal, a non-metallic material, e.g. Glass, plastic or another material with a corresponding elasticity.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Springs (AREA)

Claims (4)

1. Ressort spiral réglable de mesure (1) pour instruments de mesure, tels qu'instruments de mesure de la puissance, de la résistance, de la vitesse et de la consommation de carburant, pour des véhicules automobiles et des machines opératrices, ressort comportant un carter de support s'étendant au moins le long de la spire extérieure du ressort, ainsi qu'un dispositif de réglage coopérant avec l'extrémité extérieure du ruban élastique du ressort et permettant d'ajuster la longueur effective de ce ruban, caractérisé en ce que le carter de support est pourvu d'une spirale de support (7) s'engageant entre les spires du ressort spiral de mesure (1), ladite spirale de support étant ajustable en rotation, cependant que le ruban élastique est appliqué, à sa partie adjacente à l'extrémité extérieure du ruban, contre ladite spirale de support, et en ce que le ruban élastique présente une section transversale croissante ou décroissante de manière continue à partir des spires extérieures du ressort vers les spires intérieures de celui-ci.
2. Ressort spiral de mesure selon la revendication 1, caractérisé en ce que la section transversale croissante ou décroissante du ruban, pour une épaisseur constante de celui-ci, est obtenue par un évidement (1 a) ménagé dans le ruban élastique.
3. Ressort spiral de mesure selon l'une des revendications 1 ou 2, caractérisé en ce qu'il est susceptible d'être monté dans l'instrument de mesure avec le carter de support, en tant qu'unité de construction interchangeable.
4. Ressort spiral de mesure selon l'une des revendications 1 à 3, notamment pour des instruments de mesure mécaniques, caractérisé en ce que le ruban élastique est formé d'un matériau respectivement métallique, à base de verre ou de matière synthétique, présentant une élasticité convenable, et en ce que le pas des spires du ressort est variable.
EP80104607A 1980-08-05 1980-08-05 Ressort spiral réglable pour appareil mesureur Expired EP0045814B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP80104607A EP0045814B1 (fr) 1980-08-05 1980-08-05 Ressort spiral réglable pour appareil mesureur
DE8080104607T DE3065885D1 (en) 1980-08-05 1980-08-05 Adjustable spiral spring for measuring instruments
US06/175,707 US4595184A (en) 1980-08-05 1980-08-06 Controllable spiral spring, in particular with logarithmic characteristics

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP80104607A EP0045814B1 (fr) 1980-08-05 1980-08-05 Ressort spiral réglable pour appareil mesureur
US06/175,707 US4595184A (en) 1980-08-05 1980-08-06 Controllable spiral spring, in particular with logarithmic characteristics

Publications (2)

Publication Number Publication Date
EP0045814A1 EP0045814A1 (fr) 1982-02-17
EP0045814B1 true EP0045814B1 (fr) 1983-12-14

Family

ID=26078887

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80104607A Expired EP0045814B1 (fr) 1980-08-05 1980-08-05 Ressort spiral réglable pour appareil mesureur

Country Status (2)

Country Link
US (1) US4595184A (fr)
EP (1) EP0045814B1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5187612A (en) * 1990-11-15 1993-02-16 Gap Technologies, Inc. Gyrating programmable scanner
GB9700608D0 (en) * 1997-01-14 1997-03-05 Owen Mumford Ltd Improvements relating to springs
US6863435B2 (en) * 1997-08-11 2005-03-08 Seiko Epson Corporation Spring, mainspring, hairspring, and driving mechanism and timepiece based thereon
EP0942337B1 (fr) * 1997-08-28 2006-11-15 Seiko Epson Corporation Horloge ou boîte à musique
US6845736B1 (en) * 2002-08-02 2005-01-25 Paul G. Anderson Retractable tether for animals
EP1445670A1 (fr) 2003-02-06 2004-08-11 ETA SA Manufacture Horlogère Suisse Spiral de résonateur balancier-spiral et son procédé de fabrication
EP1818736A1 (fr) * 2006-02-09 2007-08-15 The Swatch Group Research and Development Ltd. Virole anti-choc
CH701846B8 (fr) * 2009-09-21 2015-06-15 Rolex Sa Spiral plat pour balancier d'horlogerie et ensemble balancier-spiral.
US9151351B2 (en) * 2011-06-28 2015-10-06 Controls International, Inc. Adjustable fail-safe rotary spring operator with a retaining band
US10054415B2 (en) 2015-09-30 2018-08-21 Milwaukee Electric Tool Corporation Tape measure
CN106641051A (zh) * 2016-12-22 2017-05-10 泰州市创新电子有限公司 一种负特性拉力涡卷拉簧

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DE457546C (de) * 1928-03-21 Eastman Kodak Co Federmotor mit einer zwischen den Windungen der Spiralfeder angeordneten Schicht
DE509562C (de) * 1930-10-10 Adolf Donecker Abfederung, insbesondere fuer Kraftwagen
DE361411C (de) * 1919-07-10 1922-10-11 Hugo Lentz Durch Spiralfedern abgefederte, die Laufraeder tragende Schwinghebel, insbesondere fuer Kraftwagen
US1661214A (en) * 1926-11-06 1928-03-06 Weston Electrical Instr Corp Zero corrector
US1843928A (en) * 1928-12-01 1932-02-09 Freeman H Owens Spring motor and control therefor
DE694079C (de) * 1936-07-05 1940-07-25 Ringfeder Gmbh Feder, insbesondere Tragfeder
DE922453C (de) * 1943-06-12 1955-01-17 Aeg Anordnung zum Einspannen von Spiralfedern, insbesondere bei Messapparaten
DE848456C (de) * 1944-02-25 1952-09-04 Werner Arnold In einem Hohlkoerper um eine Drehachse gelagerte Drehfeder, insbesondere fuer die Federung von Fahrzeugen
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Also Published As

Publication number Publication date
US4595184A (en) 1986-06-17
EP0045814A1 (fr) 1982-02-17

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